Paper-box machine.



- PATENTED MAY 12, 1903..

0. c. DAVIS 65 E. W. WEBSTER.

PAPER BOX MACHINE.

APPLICATION FILED JUNE 10, 1901.

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PATENTED MAY 12,1903. 0. G. DAVIS & E. W. WEBSTER.

PAPER BOX MACHINE. APIiLIOATIOR FILED mm; 10, 1901.

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PAPER BOX MACHINE.

APPLIOATION FILED JUNE 10, 1901.

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No. 728,086. PATENTED MAY 12, 1-903.

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No. 728,086- PATENTBD- MAY 12, 1903.- 0. 0'. DAVIS & E. W. WEBSTER. PAPER BOX mount.-

APPLIOATIOH FILED JUNE 10, 1901.

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. PATENTED MAY 12, 1903,

G. G. DAVIS & E. W. WEBSTER.

PAPER BOX MACHINE.

APPLICATION FILED JUNE 10, 1901.

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No. 728,086. v PATENTED- MAY 12, 1903.

c. 0. DAVIS & E. W. WEBSTER.

PAPER BOX MACHINE.

APPLICATION FILED JUNE 10, 1901. N0 MODEL. 3 SHEETS-SHEET 6.

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No; 728,086. PATENTED MAY 12, 1903.

c. c. DAVIS & B. W. WEBSTER.

PAPER BOX MACHINE.

' APPLICATION FILED JUN; 10, 1901f 8 snnn'rs-snnnr '1.

N0 MODEL.

Witnesses: In Ten/07 3 .N0.72s,08e.- I w PATENTED MAY 12,1903. 0. c. DAVIS & EJW. WEBSTER. PAPER BOX MACHINE;

APPLIOATION IILBD JUNE 19, 1901. no MODEL. 8 SHEETS-SHEET a.

No. 728,086. Patented May 12, 1903.

UNITED STATES PATENT OFFICE.

CHARLES C. DAVIS, OF CONTOOCOOK, NEW HAMPSHIRE, AND ELMER W.

WEBSTER, OF WHITMAN, MASSACHUSETTS, ASSIGNORS TO KINGSBURY do DAVIS MACHINE COMPANY, 'OF SOUTH COVENTRY, CONNECTICUT, A CORPORATION OF NEIV HAMPSHIRE.

PAPER-BOX MACHINE.

ilECIEICATION forming part of Letters Patent N 0. 728,086, dated May 12, 1903 Application filed June 10, 1901. Serial No. 63,832. (No model.)

To all whom it may concern: one of the stay-strips for the purpose of ren- Beitknown that we, CHARLES C. DAVIS, redering the same adhesive. Fig. 4 shows in siding at Contoocook, in the county of Merriplan certain details of the said devices. Fig. mack, State of New Hampshire, and ELMER 5 is a side elevation taken oppositely with re- 5 W. WEBSTER, residing at Whitman, county spect to Fig. 4.. Fig. 6 shows the devices of of Plymouth, State of Massachusetts, citizens Figs. 4, 4?, and 5 in plan. Fig. 7 isa partial of theUnited States, have invented-acertain plan view showing chiefly portion of the 'new and useful Improvement in Paper-Box crimper devices. Fig. 8 is a partly-sectional Machines, of which the following is a specielevation of the same. Fig. 9 shows the 10 fication, reference being had therein to the block or form and crimpers in transverse sec accompanying drawings. tion. I

The invention consists'in an improved ma- In the illustrated machine embodying our chine operating automatically to break or invention a blank for the body orcover of a bend blanks into the required shape for box box previously scored and corneredisbroken I5 bodies or covers and to apply stay-strips to or bent into form by the conjoint action of a the corners or angles thereof. block or plunger. and folders or folding- The aims of theinvention are to facilitate guides cooperating therewith. In the said and expedite the production of boxes and machine, althoughnot necessarily in all emcovers therefor, to reduce the number of opbodiments of the invention, the blank is fed 20 erations involved in the manufacture of automatically from a pile or stack of blar ks boxes and their covers, I to dispense with into position in connection with said block or I manual intervention in the operation of applunger andfolders or folding-guides. The plying the stay-strips, and to obviate the 00- blank having had its flanges bent into proper currence of accidents such as occasionally position, stay-strips are applied to the vari- 25 happen to operatives in connection with the ous corners or angles and are subjected to the use of the box-staying machines which are in required compression for the purpose of sense at the present time. curely uniting them to the meeting portions The invention is represented in the accomofthe said flanges. Then the box or box-cover panying drawings as embodied in a machine is dropped ontoaconveyer-belt, by which lat- 30 of convenient character and construction; tor it is transported out of the machine.

but it should be understood that, so far as the In the drawings the invention is illustrated construction of the machine in general is conas embodied in a machine for producing boxcerned, it is not material to theinvention and covers. Its application in the production of may be varied in practice according to the box-bodies will be obvious to those who are 35 exigencies of use and the views of machine skilled in the art.

builders and users. In the following description for conven- In the drawings, Figure 1 shows the said ience of reference and in order to avoid repemachine in end elevation. Fig. 2 shows the tition the term boxis used in the sense of same in side elevation with certain portions meaning either box body or cover. 4

0 of the feeding devices omitted. Fig. 2* and The machine comprises box-forming in- Fig. 2 are views of portions of the machine strumentalities-t'. 6., instrumentalities 0pin side elevatiomincluding the devices which crating automatically to break or form a 0 are omitted from Fig.2. Fig. Sshowsinplan blank into the shape of a box and instrucertain of the parts which are more immedimentalities for automatically applying the 45 ately concerned in breaking or bending the stay-strips to the angles or corners of the blank and applying the stay-strips thereto. partially-completed box. The box-forming Fig. 4: shows in side elevation the devices instrumentalitiesmaybeofanyapproved and which are provided for use in connection with suitable character and construction. The

' essentials thereof in the present instance comprise the block or former 1, Fig. 1, the breaking-rods 2 2, having in connection therewith the side guides 2 2 Fig. 3, and the breakerposts 3 3, Figs. 1, 2, and 3. The breaking-rods 2 2 support a blank by its edges in position below the block or plunger 1, and by the descent of the said block or plunger the blank is forced down within the inclosure formed by the breaker-posts and the stands 2 2, supporting said breaking-rods 2 2, the said breaking-rods and breaker-posts operating during the descent of the blank with the block or plunger to fold upward the flanges of the blank against the sides of the block or plunger. The said stands 2 2 are mounted upon the projecting portions 9' 9', Fig. 3, of the plates g g and operate to hold the side flanges of the box-blank pressed against the sides of the block or form when the latter is in its lowest position. The breaker-posts 3 3 are mounted upon the plates g g and operate similarly in connection with the end flanges of the box-blank.

For the convenient actuation of the block or plunger 1 it is mounted upon the lower end of a bar l, Fig. 1, carried bya cross-head 5, Figs. 1 and 2, which last is supported upon the upper ends of slide-rods 6 6, these passing through guides 7 7 on the frame CL of the machine and having their lower ends connected by links 8 8 with operating-levers 9 9, carrying bowls or rollers 10 10, working on cams 11 11, fast with the rotating shaft 12, the said levers having connected therewith springs 13, Fig. 2, whichoperate to hold the said bowls or rollers 10 10 in contact with the acting faces of the said cams. The cams l1 and springs 13 codperate in occasioning the vertical movements of the cross-head and block or plunger.

Preferably we combine with the box-forming instrumentalities an automatic feed, by means of which the blanks are fed successively to the said instrumentalities. Herein (see more especially Figs. 2 and 2 afeed-table shown at b, it having applied thereto upwardly-extending cheeks c,(only one of which is shown in Fig. 2%) between which a stack d of blanks is placed in readiness to be fed.

14 is a starter beneath the stack dof blanks,

it being provided at its rear end with a lip 15 Starter 14; is arranged to slide lengthwise of the feed-table b and is operated by means of a lever 17, pivoted at 6 (see also Fig. 2 and having connected therewith a rod 18, operated by an eccentric 19 on the shaft 20.

blank after having been discharged from the feed-rolls 16 16 onto the breaking-rods 2 2 is engaged by a reciprocating pusher 21 and pushed into position beneath the block or plunger 1. For the actuationof the pusher 21 it is connected by a link 22 with the lever 23, pivoted atfand having connected therewith a rod 24, engaged with a cam 25 on the shaft 20. The said cam advances the said pusher. The latter is retract-ed by means of a suitable spring or weight. (Not necessary to be shown.)

The devices for applying the stay-strips are employed at each corner of theblock or form 1 and are constructed and arranged as well as caused to operate as follows: The strips 26 26, from which the corner-stays are to be formed, are wound on reels 27 27, suitably mounted on convenient supports-as, for example, the brackets 28 28 of Figs. 1 and 2, the said brackets being attached to the plates g g. From the said reels 27 27 the strips 26 26 are led through guides past devices, by means of which the same are rendered adhesive, then through feeding devices, by means of which the strips are advanced intermittingly, and then are guided into prox-- imity to the path of movement of the corners or angles of the block or form 1. One set of the devices for guiding a strip 26, rendering the surface of the same adhesive, and intermittingly feeding the same, is shown in detail in Figs. 4 to 6, to which reference may now be had. Each set of the said devices is carried bya stand at, mounted upon one of the plates 9. Inthe said figures, 29 designates a guide to which the strip 26 passes from the reel 27, the said guide being supported from an upward extension of the trough 30, said trough being attached to stand 00. 31 is a roll partly immersed in the contents of the said trough 30, and 32 is a roll contacting at its periphery with the periphery of the roll 31. The guide 29 is arranged to cause the strip 26 to bear against the periphery of the roll 32 in passing the latter roll. The said guide 29 is provided with two arms, one of which extends upwardly from the portion of the upward extension of the trough 30 to which the guide is attached, while the other arm extends downwardly in proximity to the roll 32. The upper arm is provided with lateral guides to prevent lateral deflection of the strip 26, as shown clearly in Figs. 4, 5, and 6, while the lower arm is concaved to fit around the periphery of the roll 32 and bear the strip 26 into contact with the said roll. A portion of the contents of the trough 30 remaining upon the surface of the roll 31 as the latter rotates is taken from the latter by the roll 32 and transferred to the surface of the strip 26. If the contents of the trough 30 is paste, then the transfer of a portion of the latter to the strip will render the latter adhesive, whereas if the surface of the strip 26 has previously been preparedas, for instance, with glue or the likethen the con- ITO tents of the trough may be water, and the transfer of a portion of such water by the rolls 31 and 32 to the prepared surface of the strip 26 will render the said surface adl1e sive. After leaving the roll 32 and guide 29 the strip 26 on its way to the feed-rolls passes around a guide-roll 33, Fig. 5, mounted on stand :0. The feed-rolls are shown as comprising a roll 34, with toothed or serrated face,and a presser-roll 35,mounted on a swinging arm 36, pivoted at 37 to stand stand having connected therewith a spring 38, acting with a tendency to move the arm 36 in a direction to cause the roll to bear against the periphery of the roll 34. For the convenient actuation of the roll 34 a ratchetwheel 39, Fig. 4, is made fast therewith, the said ratchet-wheel being engaged by a pawl 40, pivoted on a pawl-carrier 41, herein constituted by a ring loosely sleeved concentrically with the feed-roll 34 and ratchetwheel 39 and connected by a link 42.with a lever 43, pivoted at h, the said lever being connected by a link 44 with a slide 45, the latter having in connection therewith a spring 46, acting to hold the slide normally in the position in which the pawl is retracted.

A spring 47, carried by the pawl-carrier 41, presses the pawl 40 into engagement with the teeth of the ratchet-wheel 39. Movement of the slide 45 in the direction opposite to that in which the spring 46 tends to move the same advances the pawl 40 and rotates the feedroll 34. For the purpose of enabling the amount of feed to be varied to meet the requirements in practice the pivot 48, by means of which the link 44 is connected with the lever 43, is moved toward or from the folcrum h of the lever 43 by means of a thumb screw 49, whereby adjustment by the oper adhesive, becoming charged with the adhe:

sive substancewith which said strip is coated, necessitating frequent cleaning of the roll which comes in contact with the moist surface of the strip; also, on account of the fact that after a brief stoppage of the machine the strip will cling to the said roll, with the result that the strip Will wind around the latter, necessitating a suspension of the working of the machine until the trouble can be remedied. With the objectin view of remedying this difficulty we arrange the devices by means of which the strip is rendered adhesive so that the strip is left dry or non-adhesive along the middle line thereof. Thus, having'reference more especially to Fig. 4, the roll 32 is formed with the annular depression or groove 321 at mid-width thereof, and hence the said roll transfers adhesive or moisture only to the side portions of the strip. Alsothepresserroll 35 is made quite narrow, so as to bear only upon the dry or non-adhesive middle line of the strip, as shown'most clearlyin Fig.6. In this manner we prevent the presser-roll 35 from becoming charged with the adhesive that is employed in connection with the strip 26 and we obviate the tendency of the strip to become wound around the said roll 35 on restarting after a stoppage of the machine.

'For the purpose of preventing relative displacement of the roll 35 and strip with re-v spect of each other the said roll is furnished with the flanges 351 351, overlapping the opposite ends of the feed-roll 34. The guide roll 33 is constructed similar to the presserroll 35lnamely, with a narrow middle portion to bear against the dry intermediate portion of the stay-strip and with side flanges to prevent lateral deviation of the stay-strip.

From the feed rolls the strip 26 passes through a slot 51, Fig. 3, in a plate 52, which is attached to the plate g, on which'the corresponding breaker-post 3 is mounted, as shown at the lower side of Fig. 3. Below the level of the said plate 2 is arranged to work the radial presser 53, mounted in a suitable slideway, which is provided in the plate g, as shown at the upper side of Fig. 3, where the plates 52 52 are removed in order toshow parts whichare concealed by such plates at the lower side of the said figure. The inner end of the said presseris formed with a rightangled notch to fit the corner or angle of the block or form 1. The presser is provided with a stud or roll 54, working in a cam-slot 55, which is provided in a slide 56, mounted in a guideway57 on the plate g. Movement of the cam-slide 56 back and forth within the edges of the slots 51 in the plates 52 they.

shear off the portions of the strips 26 hanging below the said plates '52 and immediately press the portions of the saidstrips which have thus been detached against the outer surfaces of the flanges of the box at the cor- I ners or angles thereof. By the compression produced by the inward movementof thel i pressers the stay-strips are firmly united to v the box-flanges. For the convenient actuation of the cam-slides 56 the two cam-slides at each'end of the machine are loosely engaged by a cross-head 58, to which last is connected pivotally the head of a screw-threaded rod 59, which is connected with a yoke-shaped lever 60, the latter being mounted on a rockshaft- 5, Fig. 2. Each lever 60 is operated from an eccentric 61 on the shaft 20 through the'intervention of a strap and rod 62, applied to the said eccentric, a rod 63, pivotally connected with the lower portion of the lever 60, and a spring 64, compressed between the end of the said strap and rod 62 and a collar 65 on the rod 63.

For the purpose of perfecting the bending or breaking of the flanges of the long sides of the box along the intermediate portions of the length thereof, so as to obviate any tendency to depart from the required shape, we provide crimpers, which are adapted to bend the said portions of the said flanges inward around the side edges of the block or former 1, and in connection with the said crimpers we provide suitable means for the actuation thereof at the proper times in the working of the machine. Having reference more especially to Figs. 7, 8, and 9, the crimpers are shown at 66. Each is mounted upon a foot 67, fitted to slide laterally in a guideway 68 and having connected therewith one end of a rod 69, the other end of which is connected with a radially-adj ustable cranlopin 70, fixed in the diametrical slot 71 of a crank-disk 72, the latter being mounted upon the side bar 85, and having connected therewith the pin ion 73, which is engaged by a rack 74 on a bar 75, working in a guideway in said side bar and having a second rack at 75]., which is in engagement with the pinion 76 on a shaft 77. The latter extends across the machine and serves for the transmission of motion to both of the crimpers. It has aiiixed to one end thereof a pinion 7S, meshing with the teeth of an upright rack-bar 79, the latter being operated by means of a lever 80 and a grooved cam 81 on the shaft 12. Through the means described the opposite crimpers 66 66 are moved inwardly, so as to bend the opposite side flanges of the box inward over the lower side edges 1 1, Fig. 9, of the block or form 1. In order that the bends produced by the crimpers may be sharply defined and rendered permanent, the sides of the block or form are recessed intermediate their ends, as at 1 and said edges 1 1 are acute-angled. The crimpers have beveled inner corners to fit against the beveled sides of the block or form and by their contact with the flanges of the box they operate to bend said flanges sharply over the edges 1 1.

For the convenient actuation of the slides 45 45 we have shown the latter provided with depending arms 451 451. The latter are disposed in the paths of the pressers 53 53, and in the outward movements of the latter their outer ends engage with the said arms 451 451 to move the slides in the direction which serves to rotate the feed-rolls.

82 is the conveyer-belt onto which the finished boxes drop. It is supported upon the rolls 83 83, and motion is communicated thereto in practice in any convenient manner.

The plates g g are secured by bolts 84 84, Fig. 3, upon the side bars 85 85. The said side bars are furnished with longitudinal slots 86 86, through which said bolts 84 84 pass. The said slots enable the plates g g at the opposite ends of the side bars to be adjusted toward or from one another to suit diflerent lengths of boxes. When the plates 9 g at opposite ends of the said side bars are adjusted nearer to or farther from each other, the screw-threaded rod 59 is adjusted relatively to the yoke-shaped lever 60 by means of the nuts 87 87, which are fitted to the threaded portion of said rod at opposite sides of the slotted upper end of said lever through which the rod passes.

The side bars 85 85 are supported on the cross-bars 88, upon which they are adjustable transversely in usual manner to enable the width of the boxes to be varied. In order to accommodate this transverse adjustment of the said side bars, the cross-heads 58 58 are grooved transversely in their under sides and receive in the grooves the projections 881 881, extending upwardly from the cam-plates 56 56. The cam-plates thus remain operatively connected with the said cross-heads, whatever may be the widths of the boxes for which the machine is set. For the purpose of steadying the cross-heads 58 58 in their back-and-forth movement each thereof has applied thereto blocks 89 89 for engagement with the inner edges of the corresponding pair of plates g g. The said blocks slide against the said edges and have lips which extend under the said plates, as shown in Figs. 1 and 3. Thereby the cross-heads are prevented from rising out of engagement with the projections of the cam-plates 56 56. The blocks 89 89 are connected with each cross-head by bolts 90 90, working in slots 91 91 in the crossheads, to permit of trans verse adjustment of the said blocks in accordance with adjustment of the side bars 85 85 toward and from each other.

What we claim is 1. In combination, the form or block, devices to fold the flanges of a box blank against the exterior of said form or block, and side-crimpers acting against the flanges at the sides of said form or block to complete and render permanent the bending of the intermediate portions of said flanges, substantially as described.

2. In combination, the form or block having the sides thereof provided with reduced lower edges, devices to fold the flanges of a box-blank against the exterior of said form or blank, and the crimpers coacting with the said reduced lower edges of the block or form to complete and render permanent the bending of intermediate portions of the said flanges at the sides of the form or block, substantially as described.

3. In combination, the form or block, means to fold the flanges of a box-blank against the exterior of said form or block, side-crimpers mounted to move transversely with relation to the said form or block and adapted to complete and render permanent the bending of the intermediate portions of said flanges, and means to operate the said crimpers, substantially as described.

4. In combination, the form or block, means to fold the flanges of a box-blank against the exterior of said form or block, side-crimpers to complete and render permanent the bendingofthe intermediate portionsofsaidflanges, slideways in which said crimpers are mounted to move toward and from the form or block, and means to operate the said side-crimpers, substantially as, described.

5. In combination, the form or block, means to fold the flanges of a box-blank against the exterior of said form or block, side-crimpers to complete and render permanent the bending of the intermediate portions of said flanges, the cranks having operative connection with said side-crimpers and provided with means to adjust the extent ofmovement of the latter, and means to operate the-said cranks, substantially as described.

6. In combination, the form or block, means to fold the flanges of a box-blank against the exterior of said form or block, side-crimpers to complete and renderpermanent the bending of the intermediate portions of said flanges, the cranks-with which the said sidecrimpers are operatively connected, the actuating-shaft 77 in operative connection with the said cranks, and means for operating the said shaft, substantially as described.

7. In corner-stay devices, in combination, rolls for rendering the stay-strip adhesive along'opposite sides of a non-adhesive line or stripe, the guide 29 having the arm constructed to hold the stay-strip pressed against a cooperating one of the said rolls, a feedroll, a rotating narrow presser-roll contacting with the non-adhesive portion or stripe of the stay-strip, and provided with flanges overlapping the sides of the said feed-roll, and means to actuate the said feed-roll, substantially as described.

8. In corner-stay devices, in combination, rolls for rendering a stay-strip adhesive along opposite sides of a non-adhesive line or stripe, a guide as 29 having an arm constructed to guide the stay-strip in contact with a cooperating one of the said rolls, a guide-roll as 33 having an intermediate narrow portion to contact with the non-adhesive portion of the stay-strip and lateral flanges to prevent lateral deviation of the stay-strip, a feed-roll,"

means for rotating the said feed-roll, and a narrow presser-roll contacting with the nonadhesive portion of the stay-strip and holding the latter against the feed-roll and alsoprovided with flanges overlapping the sides of the feed-roll, substantially as described.

9. In corner-stay devices, in combination, means for rendering a stay-strip adhesive, a feed-roll for said stay-strip, a ratchet-wheel connected with said feed-roll, a pawl 40 in engagement with said ratchet-wheel, the ringshaped pawl-carrier 41 sleeved concentrically with the feed-roll and ratchetwheel and means for oscillating the said ring-shaped pawLcarrier, substantially as described.

10. In combination, a block or form, transversely-adjustable plates or supports, cornerstay-applying devices carried by said plates or supports, including corner-pressers for compressing the stays against the corners of the flanges of a box supported by the said block or form, cam-plates for operating said corner-pressers, and a reciprocating crossheadin sliding engagement with said camplates, for operating the latter, substantially as described.

11. In combination, a block or form, longitudinally-adjustable plates or supports, corner stay-applying devices carried by said plates or supports, including corner-pressers for compressing the stays against the corners of the flanges of a box supported by the said block or form, cam-plates for operating the said coruer-pressers, a reciprocating crosshead in operative connection with said cam plates, an operating-lever for said cross-head and a longitudinally-adjustable rod connecting said cross-head with said lever, substantially as described.

12. In combination, a block or form, longitudinally and transversely adjustable plates or supports, corner-stay-applying devices carried by'said plates or supports, including corner-pressers for compressing the stays against the corners of the flanges of abox supported by the said block or form, cam-plates for operating said corner-pieces, a reciprocating cross-head in sliding engagement with said cam-plates for operating the latter, an operating-lever, and a longitudinally-adjustable rod connecting said cross-head with said 1ever, substantially as described.

13. In combination, a block or form, means for feeding stay-strips at the respective corners of the said block or form, means for rendering the respective stay-strips adhesive on their way to the block or form, corner-stayapplying devices opposite the respective corners of the said block or form provided with corner-pressers arranged radially with reference to the respective corners and adapted to compress the stays against the corners of the flanges of a box supported by the said block or form, cam-plates for moving the said corner-pressers radially with respect to the corners of the box or form; and means to reciprocate the said cam-plates to operate the said corner-pressers, substantially as described.

14. In combination, a block or form, means for feeding stay-strips at the respective corners ofthe said block or form, means for rendering the said stay-strips adhesive-on their way to the blockor form, transversely-adjustable plates or supports, corner-stay-applying devices carried by the said plates or supports and having corner-pressers arranged radially with respect to the corners of the said block or form and serving to compress the box supported by the said block or form, camplates for operating said corner-pressers, and a reciprocating cross-head for operating said cam-plates and in sliding engagement with the latter to permit of the transverse adjustment of the same, substantially as described.

15. In combination, a block or form, corner-stay-applying devices at the respective corners of the said block or form, including corner-pressers for compressingthe stays against the corners of the flanges of a box supported by the said block or form, said corner-pressers arranged radially with respect to the said corners, means for reciprocating said corner-pressers relative to the said corners of the block or form, cutters above the said corner-pressers operated by the latter and acting to sever the stays which are applied by the said corner-pressers, means adjacent the respective corners of the block or form and above the corner-pressers and cutters to feed stay-strips, and means for applying adhesive to the said stay-strips on their way to the corner-pressers, substantially as described.

16. In combination, the corner presser, means for operating the same, feed-rolls for advancing the stay strip, and actuating means for the said feed-rolls operated by the said corner-presser in its receding movement, substantially as described.

17. In combination,a corner-presser, means for operating the same, feed-rolls for the staystrip, pawl and ratchet devices for operating the said feed-rolls, and a slide connected with the said devices and itself operated by the corner-presser in its receding movement, substantially as described.

18. In combination, the corner presser, means for operating the same, feed-rolls for the stay-strip, pawl and ratchet devices for operating said feed-rolls including a lever, and an operating-slide which last is actuated by the receding movement of the cornerpre'sser, and means for varying the amount of feed, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

CHARLES C. DAVIS. ELMER W. WVEBSTER.

Witnesses:

CHAS. F. RANDALL, ARTHUR F. RANDALL. 

